Libertarianism is a failed ideology, people need to realize that.
What's the best course for America would be to form a party that's populist in a way that's economically centrist, willing to go either way on economics such as being for complete free trade but also helping workers and willing to help out the disadvantaged and the average American who needs assistance, but not to the extreme along with being socially conservative. That could be an almost unstoppable party.
No such thing as economically centrist. There's not even a political party that wants to hold government intervention at the level we have right now. Politicians "earn their pay" by "finding" a new crisis and starting a new government program to "solve" it. If that's not enough, then they will declare a new "universal human right" that merits even more intervention.
To address other posters, libertarianism is not a cruel ideology. You're only looking at things from the perspective that people
need government help. The truth is that we've added layer upon layer of government programs without reducing poverty. All of this government "help" induces more people to depend on government rather than themselves. If government stopped offering benefits, people would either adjust and provide for themselves or choose to do without.
I'm not a pure libertarian, as I'm comfortable with government maintaining an interstate highway system, providing disaster relief and rescue operations, and even subsidizing critical national defense contractors. Still, compassion is not the same thing as sending people dollars and regulations from Washington, DC. And if there's a moral obligation to help certain people, I don't think it necessarily justifies taking someone else's money to do so.